I really fear that they all awake at the same time and flood / attack our instances.. This seems to be a temporary solution but time consuming for you. Beehaw defederated too from a list of instances. Maybe this list could help you :

lemmy.k6qw.com,lemmy.podycust.co.uk,waveform.social,bbs.darkwitch.net,cubing.social,lemmy.roombob.cat,lemmy.jtmn.dev,lemmy.juggler.jp,bolha.social,sffa.community,dot.surf,granitestate.social,veenk.help,lemmyunchained.net,wumbo.buzz,lemmy.sbs,lemmy.shwizard.chat,clatter.eu,mtgzone.com,oceanbreeze.earth,mindshare.space,lemmy.tedomum.net,voltage.vn,lemmy.fyi,demotheque.com,thediscussion.site,latte.isnot.coffee,news.deghg.org,lemmy.primboard.de,baomi.tv,marginalcuriosity.net,lemmy.cloudsecurityofficehours.com,lemmy.game-files.net,lemmy.fedi.bub.org,lemmy.blue,lemmy.easfrq.live,narod.city,lemmy.ninja,lemmy.reckless.dev,nlemmy.nl,lemmy.mb-server.com,rammy.site,fedit.io,diggit.xyz,slatepacks.com,theotter.social,lemmy.nexus,kleptonix.com,rabbitea.rs,zapad.nstr.no,feddi.no

based on the list of instances made by @sunaurus here - Thank you again for that work, it’s highly appreciated.

This is a preventive measure against massive amounts of accounts being created for botting purposes. Most instances banned appear to be 1 user instances so we don’t think this will have a great effect on anyone’s usage of Beehaw. If you are an admin of one of those instances, feel free to contact us at support@beehaw.org

here the original post :
https://beehaw.org/post/701910